what are the real sorority rankings here?

TOP : Alphas & Tris
Mid: SK & DZ
Bottom: AGD & SXD

There are no such things as tiers at Truman. All of the sororities are about the same size, they all care very much about scholarship, socializing, their philanthropy and participating in other organizations' programs, sisterhood, and Homecoming/Greek Week. The only difference is the individuals in each sorority. Anyone who tries to tell you they are "the best" is lying and compensating for something. Just go where you heart tells you, not what some stranger tells you the "top tier" is.

There's really not a way to tier the sororities here without being biased, get to know each of them well enough and you'll find they each have their group of girls that like to go out often, to the girls that are very involved but don't go out as much to the girls that are part of the organization but really aren't as involved or very busy in other organizations. Why I think this, rush bidding for sororities and the amount of girls that end up in organizations that weren't their first choice who end up fitting in fine and the GX's each year and how well they mesh.